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HelicopterMiniature Aircraft Whiplash & Fury 55 › Just purchased a Stratus Conversion with YS 91 ST are the YS 91 SR parts compatible?
08-02-2016 06:05 PM  12 months agoPost 1
sethwyeth

New Heliman

Lowell, Massachusetts

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I'm having a hard time locating parts for the YS 91 ST engine (piston ring, bearings kit etc.) are these the same parts as the YS 91 SR? I seem to be able to find more of those.

I have the 91 St pdf manual and it lists the parts

S5107 Piston Ring
R6211 Front Bearing
S7113 Rear Bearing

Cant find this stuff anywhere

The engine is in good shape I just wanted to replace these three components as preventative maintenance

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08-02-2016 06:18 PM  12 months agoPost 2
xcellgasman101

Elite Veteran

WOODWARD, OKLA....

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Three second search. https://www.rcworld.com.au/motors/s...-ring-91st.html

I know this is in a different country but..... XGM/VGM

John Crotts
www.soonerhelicamproductions.com

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08-02-2016 06:20 PM  12 months agoPost 3
canman

Heliman

Westminster, CO - USA

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This is link may be helpful. Most manuals are listed so you can verify parts and maybe order them as well.

http://www.ysengines.us/

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08-02-2016 06:46 PM  12 months agoPost 4
sethwyeth

New Heliman

Lowell, Massachusetts

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dang I was afraid as much. 35$ for a piston ring is a yiddle steep considering I was going to purchase a few spares

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08-11-2016 09:57 PM  12 months agoPost 5
geomecc

Key Veteran

Long Island ,NY

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get it thru rcjappan to save money

R I P Roman Jr. Team SKOOKUM SRW EFC

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08-13-2016 02:26 AM  12 months agoPost 6
sethwyeth

New Heliman

Lowell, Massachusetts

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thank you! very reasonable once i converted yen to usd lol. so excited miniature aircraft has come back from the grave!

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08-14-2016 07:30 PM  12 months agoPost 7
Rojoalfa

Senior Heliman

Punta de Mata, Monagas-Venezuela

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/
/

Piston ring is 22 mm bore, so piston ring of os91fx run with on problem.

/

Saludos cordiales,

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11-10-2016 02:43 PM  9 months agoPost 8
IYKIST

Key Veteran

London united kingdom

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so excited miniature aircraft has come back from the grave!
Just been on their website and some of their prices are outrageous, with those kind of prices it would be hard to compete.

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